#实例属性演示
class Person:
    def __init__(self):
        self.name = 'yui'
        self.age = 18
    def say(self):
        self.test = 100

if __name__ == '__main__':
    p = Person()
    print(p.name)
    print(p.age)
    #print(p.test)
    p.say()
    print(p.test)
    